Source : Webster's Revised Unabridged Dictionary (1913)

Gonidial \Go*nid"i*al\, a. (Bot.)
   Pertaining to, or containing, gonidia.

Gonidial \Go*nid"i*al\, a. (Zo["o]l.)
   Of or pertaining to the angles of the mouth; as, a gonidial
   groove of an actinian.